3RH21222KF400LA0
Siemens SIRIUS 3RH2122-2KF40-0LA0 railway auxiliary contactor relay, 2NO+1NC contacts, 110V DC coil, built-in surge suppression diode, spring-loaded terminals, Size S00 standard size.
Product Positioning
The 3RH2122-2KF40-0LA0 is a special railway application version of the SIRIUS 3RH2122 series. It features a 110V DC coil with a 2NO+1NC contact configuration and a built-in surge suppression diode to protect the control circuit.
Core Product Advantages and Features
Special version for railway applications
The contact configuration is 2NO+1NC, which is a special version of the 3RH2122 series launched to meet the needs of the railway industry, and is different from the standard 2NO+2NC model.
110V DC coil design
The coil has a rated voltage of 110V DC and an operating range of approximately 0.7 to 1.25 times the rated voltage, making it suitable for track system control power supplies.
Built-in surge suppression diode
The coil side integrates a suppression diode, which can effectively reduce the surge interference caused by back EMF when switching DC coils.
Spring-type terminals
It uses spring-loaded terminal wiring, which allows for quick installation and is suitable for connecting PLC output circuits.